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MACHINERY FOR MAKING OVAL PICTURE FRA J. E. SWEET.

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Patented Feb; 12,1867.

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JOHN E. SWEET, OF SYRACUSE, NEW YORK, ,ASSIGNO-R TO JOHN T. BON

AND E, B... SANFORD, OF SAME PLACE.

Letters Patent No. 62,086, dated February 12, 1867.

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KNOW ALL MEN BY THESE rnsssnrm That I, JOHN E. SWEET, of the city of Syracuse, county of Onondaga, and State of New York, have invented certain newand useful Improvements in Machinery used for Manufacturing Oval Picture-Frames and I do hereby declare the followin g to be a sufliciently clear and exact description of the sanie that any one skilled in such matters may, in connection with the accompanying drawings, which form a part of my specifications, readily construct and usemy invention. v

I may premise, however, the remark that all such frames areat present madeof wood, and have their faces, or that portion whichjs to be neatly finished, left' in a rough condition, but with the true form, afterlwhich a composition of a plastic nature is laid over'said faces or surfaces in several successive layers, and worked into a proper shape by a former, until a nice hard shrface is obtained, upon which the gilding or pigments may be laid. Now the chief object of my invention is to facilitate the laying on of this plastic composition by mechanism which is completely automatic with the single exception of supplying'the material to the-fr ame.

Figure 1 is 'a' plan or top view.

Figure 2, alongitudin'al and vertical section.

Figure 3, a transverse vertical section.

Figure 4, an enlarged plan of the eccentric movement. I g V Figure 5, a diagram showing six differentpositions of the frame during a half revolution. I

Figure 6, an outline of a waved circle, whichmay be produced by a simple change of the gearing.

Like letters refer to like parts in all the figures;

A is the frame or table, made of wood or other suitable material, longitudinal in form, with a.basin','B, in the centre, so situated that two operatives can be easily supplied from it. The driving-shaft G, supported in the bcarin gs c 1:, receives its motion from the driving pulley Upon it is a clutch, I ,'and two pi nions, a. and a. D and E are two shafts, one within the other, as shown in fig. 2. The outer shaft D-is secured at its lower en d in the bevelwheel F, and at its upper end carries a metal box, Gr, figs. 2 and 3. The inner shaft E has its.

bearing in the step d, and upon its lower end the mitre pinion t, and at its upper end a crank or eccentric, m, as seen in figs. 2 and 4. Upon the crank m, as shown at fig. 4, is an adjustable eccentricsleeve, S, which gives the capacity of increasing or diminishing the throw of the crank m. M is'a parallelogram-shaped box, whose extreme length is equal to the size of the inside of box G, and fitted so as to slide freely therein. N is a box of similar form within the box M, and similarly fitted, arid within it is nicely adjusted the crank m or sleeve S, all so arranged that the box N can move in any" direction parallel with the plane of motion, and willrevolve only when the box Gris in'motion. The arm 0, upon the upper end of the upright rod L, whose lower cnd rests upon the pedal P, figs. 2 and 3, supports the scraper or former R, which is made of metal, and is cut to suit the face of the frame, as shown at z, fig. 2. The arm 0 is made adjustable upon the upright by a set-screw, as shown at fig. 3, so as to be adapted to the various thicknesses of frame. At 1', uponthe upright L, is a stud or feather working in a slot so as to keep the arm 0 firmly fixed when in operation, but readily turned out ofthe way by placing the foot on the pedal so as to raise said stud froni or above the slot. The frame T tobe operated upon is secured upon a platen, 2, which is fastened upon thebox G, and thereforerevolves with it when the machine is in motion, and also receives all the movements that the combined pinions and crank would give to said her. Seine of said movements may be more readily understood by a reference to fig. 5, where six difi'erent positions of the frame are shown in a half revolution as, for example, let the black line represent the frame or oval, and thestartiug-point 1 the position of theoommon centre of theoval and also the centrebf the eccentric let the oval he revolved one-twelfth of a revolution and the eccentric one-sixth, and the positionof the oval will be represented by the blue line.' The red line would represent the position of the oval at another twelfth, or

the crank, at 1 2 3 4' 5 and 6, would place the corresponding points of the oval at 1 2' 3 4 5' 6. But at 9 a1il the lines coincide, and at this point a fixed scraper or former can be. stationed. It will be observed that at- I, figs. 1 and 2, similar machinery could be arranged, and two operatives could work at the same table, as already. hinted. The'plastie from the basin B is applied to the frame with a brush, and. as the machinery rcvplves, the

surface is scraped off by the former, as at R and z, fig. 2, or at the point 9 as shown 'in fig. 5. I

2 capsa Having thus briefly described my invention, what I desire to cl aim, and secure by Letters Patent, is- 1. The combination and arrangement of the shafts G D E, and theirpinions, with the crank and its botes, sul. st:mtia,lly'as described and for the purposes set forth. I

2. The eccentric-sleeve S, for varying the throw of the crank, substantially as described. 3. The combination of the scraper R, arm 0, and upright L, either with orvwithont the pedal P, as described and for the purposes set forth.

JOHN E. SWEET.

\Vitnesses: 1

WILLIAM A. SWEET, WiLLlAM W. COCK. 

